CDC Survey: Nearly Half of US Adults Sleep-Deprived

How Widespread Is Sleep Deprivation in the United States?

According to the CDC's National Health Interview Survey, approximately 30.5% of US adults reported averaging less than seven hours of sleep per night in 2024, falling short of the minimum duration jointly recommended by the American Academy of Sleep Medicine and the Sleep Research Society. When combined with adults reporting frequent trouble falling or staying asleep, the proportion of Americans affected by inadequate sleep approaches half of the adult population.

Disparities are pronounced. Prior CDC analyses have consistently shown that working-age adults aged 25 to 64, shift workers, and adults from Black, Hispanic and multiracial backgrounds report short sleep at higher rates than older adults or non-Hispanic white populations. Geographic clustering is also evident, with the highest short-sleep prevalence reported across the southeastern United States — a region that simultaneously carries the country's heaviest cardiometabolic disease burden.

Why Does Chronic Short Sleep Threaten Long-Term Health?

The biological consequences of insufficient sleep extend across nearly every organ system. Short sleep disrupts glucose metabolism and insulin sensitivity, elevates evening cortisol levels, raises blood pressure, and promotes systemic low-grade inflammation. The American Heart Association has formally added sleep duration to its 'Life's Essential 8' framework for cardiovascular health, reflecting evidence that habitually sleeping under seven hours is linked to higher rates of hypertension, coronary artery disease and stroke.

Cognitive and mental health effects are equally well documented. Even modest sleep restriction impairs attention, memory consolidation and emotional regulation, and longitudinal studies link chronic short sleep to elevated risk of major depressive disorder and anxiety. Emerging research from the Lancet Commission on dementia prevention and large cohort studies also implicates poor sleep quality and short duration in midlife as a contributor to later cognitive decline, although the causal direction remains an active area of investigation.

What Can Individuals and Policymakers Do to Address the Sleep Gap?

At the individual level, sleep medicine guidelines emphasize a consistent sleep schedule, limiting evening light exposure (especially from screens), avoiding alcohol and large meals close to bedtime, and seeking evaluation for symptoms of obstructive sleep apnea, insomnia or restless legs syndrome. Cognitive behavioral therapy for insomnia (CBT-I) remains the first-line treatment recommended by the American College of Physicians, ahead of pharmacologic options.

Policy interventions are gaining traction. The American Academy of Pediatrics and CDC have long supported delayed school start times to align with adolescent circadian biology, and several states have enacted such laws. Workplace strategies — including limits on consecutive night shifts, fatigue-risk management for safety-critical industries, and protections against off-hours digital communication — are increasingly framed as occupational health interventions. Public health authorities now describe sleep as a modifiable behavioral risk factor on par with diet, physical activity and tobacco use.